The Sword Swallower

Description for THE SWORD SWALLOWER by Ron Goulart:

THE PLANET ESPERANZA 

Esperanza served as the galaxy's combination fun-house and cemetery, with something for everybody, dead or alive.  But for Ben Jolson, ace agent of the Chameleon Corps, the planet held only danger as he went after the sinister pacifist network threatening the sacred institution of permanent war.

Jolson had the power to change identities at will---and in Esperanza's maze of graves and gambling hells, sex palaces and rejuvenation clinics, hippie ghettos and frozen body centers, his changes came fast and wild...until the challenge that Jolson could face only as himself...if he could find out who he really was...